Nonoxidative Coupling of Methane over Ceria-Supported Single-Atom Pt Catalysts in DBD Plasma
Source abstract
Abstract
Plasma-catalytic direct nonoxidative coupling of methane (NCM) into C2 hydrocarbons was investigated over ceria-supported atomically dispersed Pt (Pt/CeO2-SAC) and nanoparticle Pt (Pt/CeO2-NP) catalysts in dielectric barrier discharge (DBD) plasma. Nonthermal plasma facilitated C–H bond dissociation in CH4 at low temperatures (<150 °C) and atmospheric pressure. The presence of Pt/CeO2 catalysts in plasma further enhanced CH4 conversion and C2 hydrocarbon selectivity by enabling the conversion of vibrationally excited methane species with high internal energy on active Pt sites. Noticeably, the Pt/CeO2-SAC catalyst displayed a more remarkable performance, with a CH4 conversion of 39% and a C2 selectivity of 54% at 54 W. The enhanced CH4 conversion was attributed to abundant coordinatively unsaturated Pt sites in Pt/CeO2-SAC, which were more active for C–H bond scission. Meanwhile, isolated Pt atoms in Pt/CeO2-SAC promoted C2 hydrocarbon formation by hindering the unselective formation of coke from deep dehydrogenation of CHx• intermediates and higher hydrocarbons from oligomerization reactions.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · CO2 Reduction Techniques and Catalysts
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemical & Biomolecular Engineering, National University of Singapore, Singapore 117585
MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
Funding
National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities, Nankai University · Ministry of Education, Singapore · NUS Green Energy Programme · A*STAR LCERFI · NUS FRC MOE T1
References (68)
Show source-provided references
1. 10.1021/acsami.7b1340810.1021/acsami.7b13408 ↗
2. 10.1039/C4EE00604F10.1039/C4EE00604F ↗
3. 10.1021/acsami.0c0227310.1021/acsami.0c02273 ↗
4. 10.1021/acsami.1c1366110.1021/acsami.1c13661 ↗
5. 10.1021/acsami.1c1491810.1021/acsami.1c14918 ↗
6. 10.1021/acsami.0c0008610.1021/acsami.0c00086 ↗
7. 10.1002/anie.20190300010.1002/anie.201903000 ↗
8. 10.1021/acsami.7b1494110.1021/acsami.7b14941 ↗
9. 10.1021/jacs.0c0130610.1021/jacs.0c01306 ↗
10. 10.1021/jacs.7b1101010.1021/jacs.7b11010 ↗
11. 10.1021/acs.chemrev.6b0071510.1021/acs.chemrev.6b00715 ↗
12. 10.1016/j.cej.2018.09.05710.1016/j.cej.2018.09.057 ↗
13. 10.1016/j.fuproc.2018.03.01110.1016/j.fuproc.2018.03.011 ↗
14. 10.1021/jacs.8b1385810.1021/jacs.8b13858 ↗
15. 10.1021/acsami.1c0311510.1021/acsami.1c03115 ↗
16. 10.1021/acsenergylett.9b0026310.1021/acsenergylett.9b00263 ↗
17. 10.1016/j.ijhydene.2014.06.04710.1016/j.ijhydene.2014.06.047 ↗
18. 10.1016/j.cej.2018.11.16110.1016/j.cej.2018.11.161 ↗
19. 10.1016/j.cej.2018.08.15010.1016/j.cej.2018.08.150 ↗
20. 10.1016/S2095-4956(13)60055-810.1016/S2095-4956(13)60055-8 ↗
21. 10.1016/j.fuel.2018.03.01710.1016/j.fuel.2018.03.017 ↗
22. 10.1016/j.cattod.2017.01.02110.1016/j.cattod.2017.01.021 ↗
23. 10.1021/acsami.0c1700910.1021/acsami.0c17009 ↗
24. 10.1021/acsami.8b1039410.1021/acsami.8b10394 ↗
25. 10.1126/science.125315010.1126/science.1253150 ↗
26. 10.1126/science.aao502310.1126/science.aao5023 ↗
27. 10.1038/352789a010.1038/352789a0 ↗
28. 10.1021/acscatal.8b0000410.1021/acscatal.8b00004 ↗
29. 10.1016/j.enconman.2020.11247510.1016/j.enconman.2020.112475 ↗
30. 10.1016/j.apcatb.2019.11857310.1016/j.apcatb.2019.118573 ↗
31. 10.1016/j.jhazmat.2019.05.01910.1016/j.jhazmat.2019.05.019 ↗
32. 10.1016/j.apcatb.2019.03.03910.1016/j.apcatb.2019.03.039 ↗
33. 10.1002/anie.20170111510.1002/anie.201701115 ↗
34. 10.1021/acsami.5b0398810.1021/acsami.5b03988 ↗
35. 10.1021/jacs.9b0915610.1021/jacs.9b09156 ↗
36. 10.1021/acssuschemeng.8b0261310.1021/acssuschemeng.8b02613 ↗
37. 10.1002/anie.20160470810.1002/anie.201604708 ↗
38. 10.1038/ncomms1080110.1038/ncomms10801 ↗
39. 10.1038/s41467-019-09308-510.1038/s41467-019-09308-5 ↗
40. 10.1021/acscatal.9b0208310.1021/acscatal.9b02083 ↗
41. 10.1021/acsami.8b0118710.1021/acsami.8b01187 ↗
42. 10.1021/acsami.8b1558510.1021/acsami.8b15585 ↗
43. 10.1021/acscatal.8b0488510.1021/acscatal.8b04885 ↗
44. 10.1126/science.aaf880010.1126/science.aaf8800 ↗
45. 10.1021/jacs.7b0709310.1021/jacs.7b07093 ↗
46. 10.1038/s41929-020-0427-z10.1038/s41929-020-0427-z ↗
47. 10.1021/acs.jpcc.6b0865610.1021/acs.jpcc.6b08656 ↗
48. 10.1007/s12274-019-2351-610.1007/s12274-019-2351-6 ↗
49. 10.1021/jp710591m10.1021/jp710591m ↗
50. 10.1021/jp311912b10.1021/jp311912b ↗
51. 10.1039/C7CY00970D10.1039/C7CY00970D ↗
52. 10.1016/j.cattod.2017.04.04310.1016/j.cattod.2017.04.043 ↗
53. 10.1006/jcat.1998.222510.1006/jcat.1998.2225 ↗
54. 10.1021/acssuschemeng.9b0040610.1021/acssuschemeng.9b00406 ↗
55. 10.1063/1.492145210.1063/1.4921452 ↗
56. 10.1021/acscatal.8b0015610.1021/acscatal.8b00156 ↗
57. 10.1016/j.rser.2016.04.00710.1016/j.rser.2016.04.007 ↗
58. 10.1021/acs.jpcc.0c0349410.1021/acs.jpcc.0c03494 ↗
59. 10.1016/j.ces.2020.11639910.1016/j.ces.2020.116399 ↗
60. 10.1126/science.108899610.1126/science.1088996 ↗
61. 10.1039/C9SC05947D10.1039/C9SC05947D ↗
62. 10.1021/ar50053a00110.1021/ar50053a001 ↗
63. 10.1021/acscatal.0c0494310.1021/acscatal.0c04943 ↗
64. 10.1002/anie.20200977610.1002/anie.202009776 ↗
65. 10.1016/j.apcatb.2016.04.05510.1016/j.apcatb.2016.04.055 ↗
66. 10.1016/j.apcatb.2008.06.02110.1016/j.apcatb.2008.06.021 ↗
67. 10.1039/C5RA27085E10.1039/C5RA27085E ↗
68. 10.1021/acs.chemrev.5b0036210.1021/acs.chemrev.5b00362 ↗